64 Audio Aspire 4 Four Driver In-Ear Monitors

aspire series in ears

Aspire Series

Monitor your performance with 64 Audio's professional universal in-ear monitors (UIEM) specifically designed for musicians and live music professionals. Whether you're just getting into monitoring with in-ears, not ready for customs, need a backup set, or simply prefer generic fitting products Aspire Series offers best-in-class sound and ergonomics.

World Class Sound

With live music at the forefront of our tuning criteria do we make a highly accurate unforgiving studio monitor or a contoured device that helps musicians hear themselves more effectively? As with many of our monitoring tools the answer is somewhere in the middle. Huge bass that can reproduce some of the toughest frequencies in the audible spectrum with quick ease. Forward mids that are precisely elevated for articulation in the most vital region of instruments and voices. Plenty of high-frequency sparkle. This is what really separates Aspire Series from any other UIEMs in their class, making this powerful sound signature a perfect blend of accuracy and musicality.

64 Audio Professional Heritage

Since 2010 we've crafted thousands of custom in-ear monitors for some of the world's greatest musical talent. Working with these discerning and critical entertainers has shaped our products and technological development, culminating in our most accessible UIEM to date. Sharing that same legendary DNA and patented technology, Aspire is the ultimate UIEM series for anyone who needs to HEAR LIKE A PRO.

aspire 4

Aspire 4

Technology

Stainless Steel Nozzle

Our stainless steel nozzle, coupled to the molded ABS shell, provides durability needed for consistent use and the removal of ear tips. With a flange design and mesh grill, ear tips won't fall off by mistake and the sound bore will remain free of debris.

ApexCore

Our patented technology seamlessly integrated into the body of the earphone. The pressure relieving channel provides our controlled leak via acoustic filters as opposed to pneumatically interactive foam in our traditional Apex™ implementation.

Wave Guide

Custom designed acoustic structure integrated onto the high-frequency balanced armature driver. Unique in its shape and implementation, this waveguide increases the driver's efficiency by directing and focusing its energy for a crisp and clear sound.

LID

LID is a proprietary circuit that corrects the non-linear impedances of the drivers, restoring proper interaction with the source and preserving the desired sound signature.

aspire series on bass

Sound: Aspire 4

Specifications

Color

Black

Frequency Response

20Hz - 18kHz

Isolation

-20 dB

Material

Molded ABS Shell

Stainless Steel Nozzle

Impedance

11 Ω @ 1kHz

IPX Cable

48" Black - Detachable

90 degree 3.5mm Jack

Driver Configuration

1 Low Dynamic Driver

2 Mid Balanced Armature Drivers

1 High Balanced Armature Driver

Sensitivity

104 dB @ 1kHz @1mw

Included Items

Carry Case
Foam + Silicone Ear Tip
Oval Foam Tips
IPX Cable
Cleaning Tool
1/4" Adapter
Shirt Clip

Piano with Aspire 2

FAQs

How is the Aspire Series different from your other custom and universal models?

Aspire Series isn't custom fitting, so similar to our other Universal In-Ear Monitors (UIEMs) they require the use of foam or rubber ear tips which are provided with the UIEMs. Unlike our other UIEMs (U4s, U12t, Fourté, etc) Aspire Series is built with an ABS molded shell and a stainless steel tip. It's also built with an IPX (or T2) socket as opposed to a 2-pin socket. Aspire Series also differs from those other UIEMs in that they aren't built with our tia™ technology.

Since they have similar driver counts to other models like U4s and Solo, what sets them apart?

One of the biggest differentiators is the redesigned form factor and shell materials. Between the four models in Aspire Series, the components and their configurations are wholly unique to them and aren't used in the same way across our other product lines. While Aspire Series doesn't use our tia™ driver for the highs, we've developed things like revolutionary waveguides and used Helmholtz Resonators for tuning to elevate the sound of Aspire Series to our high standards. They're also specifically designed and tuned for musicians and live-audio professionals as opposed to audiophiles and high-end audio enthusiasts.

What does "Hybrid" mean?

Hybrid refers to our use of multiple styles of drivers to achieve our desired sound. Aspire 2, 3, & 4 combines the use of balanced armature drivers for the mids and highs, and a single dynamic driver for the lows.

How does apex core differ from your patented apex™ tech?

Apex core, which is also used in Solo, achieves the same pressure relief using a different internal structure and material compared to our standard apex tech. Similar to some of our other UIEMs, Aspire Series' apex core tech is built-in rather than an interchangeable module.

If I can't get a good fit with your tips, am I able to use third party tips?

Yes you can use any tips you'd like, the nozzle outer diameter is 5mm so that is the dimension you need to keep in mind when trying a third party tip.

If the cable fails do I need to send the whole unit in for repair?

No, since the cable is detachable you can just buy a new cable from our website or any other cable that uses genuine estron IPX (or sometimes called T2) parts.

When I plug these in I have to turn the volume higher/lower than my previous set. Does that mean they're better/worse?

Since most IEM models have different "sensitivity" specs you will find that anytime you change your IEM model you might need to adjust your volume. It isn't necessarily an indication of quality or volume capacity.

Where is the Aspire Series made?

Aspire Series products are Designed, Packaged and QC'd by highly skilled technicians in the United States. Assembled in China using components sourced globally from trusted suppliers.

aspire 2

64 Audio Aspire 4 Universal In-Ear Monitors